Material and design parameters optimization to enhance the life of Anti-Roll bar of commercial truck

Abstract

In this study, an anti-roll bar that will be used in the front axle suspension of a 25 metric tonnes capacity rigid as well as construction Trucks s focused. It is redesigned to minimize the stress concentration at the corner bends. In order to execute this, regions that are under stress concentration during the roll motion of the vehicle body are determined by using finite element analysis. Geometric parameters which constitute the form of these regions are assigned. In the light of the results obtained from the stress analyses that were carried out for the different values of these parameters, stress and mass alteration are assessed by using Trial and Error Method. The effects of these modifications on stress concentration and anti-roll bar mass are studied. Response surfaces for maximum von Mises stress and the mass of the anti-roll bar are also constructed by Multi-body Dynamics and Hyper works commercial finite element software Package. By using these results, transition from among the design candidates that gives Minimum stress concentration is determined. Four kinds of modification in design considered which includes the change of material, radius of curvature and length of the bar. The dynamic analysis based results evaluated and suggested the outperformed design.